js/src/jit/BaselineCompiler.h@129ffea94266
js/src/jit/BaselineCompiler.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2 * vim: set ts=8 sts=4 et sw=4 tw=99:
3 * This Source Code Form is subject to the terms of the Mozilla Public
4 * License, v. 2.0. If a copy of the MPL was not distributed with this
5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
7 #ifndef jit_BaselineCompiler_h
8 #define jit_BaselineCompiler_h
10 #ifdef JS_ION
12 #include "jit/FixedList.h"
13 #if defined(JS_CODEGEN_X86)
14 # include "jit/x86/BaselineCompiler-x86.h"
15 #elif defined(JS_CODEGEN_X64)
16 # include "jit/x64/BaselineCompiler-x64.h"
17 #elif defined(JS_CODEGEN_ARM)
18 # include "jit/arm/BaselineCompiler-arm.h"
19 #elif defined(JS_CODEGEN_MIPS)
20 # include "jit/mips/BaselineCompiler-mips.h"
21 #else
22 # error "Unknown architecture!"
23 #endif
25 namespace js {
26 namespace jit {
28 #define OPCODE_LIST(_) \
29 _(JSOP_NOP) \
30 _(JSOP_LABEL) \
31 _(JSOP_POP) \
32 _(JSOP_POPN) \
33 _(JSOP_DUPAT) \
34 _(JSOP_ENTERWITH) \
35 _(JSOP_LEAVEWITH) \
36 _(JSOP_DUP) \
37 _(JSOP_DUP2) \
38 _(JSOP_SWAP) \
39 _(JSOP_PICK) \
40 _(JSOP_GOTO) \
41 _(JSOP_IFEQ) \
42 _(JSOP_IFNE) \
43 _(JSOP_AND) \
44 _(JSOP_OR) \
45 _(JSOP_NOT) \
46 _(JSOP_POS) \
47 _(JSOP_LOOPHEAD) \
48 _(JSOP_LOOPENTRY) \
49 _(JSOP_VOID) \
50 _(JSOP_UNDEFINED) \
51 _(JSOP_HOLE) \
52 _(JSOP_NULL) \
53 _(JSOP_THIS) \
54 _(JSOP_TRUE) \
55 _(JSOP_FALSE) \
56 _(JSOP_ZERO) \
57 _(JSOP_ONE) \
58 _(JSOP_INT8) \
59 _(JSOP_INT32) \
60 _(JSOP_UINT16) \
61 _(JSOP_UINT24) \
62 _(JSOP_DOUBLE) \
63 _(JSOP_STRING) \
64 _(JSOP_OBJECT) \
65 _(JSOP_REGEXP) \
66 _(JSOP_LAMBDA) \
67 _(JSOP_LAMBDA_ARROW) \
68 _(JSOP_BITOR) \
69 _(JSOP_BITXOR) \
70 _(JSOP_BITAND) \
71 _(JSOP_LSH) \
72 _(JSOP_RSH) \
73 _(JSOP_URSH) \
74 _(JSOP_ADD) \
75 _(JSOP_SUB) \
76 _(JSOP_MUL) \
77 _(JSOP_DIV) \
78 _(JSOP_MOD) \
79 _(JSOP_LT) \
80 _(JSOP_LE) \
81 _(JSOP_GT) \
82 _(JSOP_GE) \
83 _(JSOP_EQ) \
84 _(JSOP_NE) \
85 _(JSOP_STRICTEQ) \
86 _(JSOP_STRICTNE) \
87 _(JSOP_CONDSWITCH) \
88 _(JSOP_CASE) \
89 _(JSOP_DEFAULT) \
90 _(JSOP_LINENO) \
91 _(JSOP_BITNOT) \
92 _(JSOP_NEG) \
93 _(JSOP_NEWARRAY) \
94 _(JSOP_INITELEM_ARRAY) \
95 _(JSOP_NEWOBJECT) \
96 _(JSOP_NEWINIT) \
97 _(JSOP_INITELEM) \
98 _(JSOP_INITELEM_GETTER) \
99 _(JSOP_INITELEM_SETTER) \
100 _(JSOP_MUTATEPROTO) \
101 _(JSOP_INITPROP) \
102 _(JSOP_INITPROP_GETTER) \
103 _(JSOP_INITPROP_SETTER) \
104 _(JSOP_ENDINIT) \
105 _(JSOP_ARRAYPUSH) \
106 _(JSOP_GETELEM) \
107 _(JSOP_SETELEM) \
108 _(JSOP_CALLELEM) \
109 _(JSOP_DELELEM) \
110 _(JSOP_IN) \
111 _(JSOP_GETGNAME) \
112 _(JSOP_BINDGNAME) \
113 _(JSOP_SETGNAME) \
114 _(JSOP_SETNAME) \
115 _(JSOP_GETPROP) \
116 _(JSOP_SETPROP) \
117 _(JSOP_CALLPROP) \
118 _(JSOP_DELPROP) \
119 _(JSOP_LENGTH) \
120 _(JSOP_GETXPROP) \
121 _(JSOP_GETALIASEDVAR) \
122 _(JSOP_SETALIASEDVAR) \
123 _(JSOP_NAME) \
124 _(JSOP_BINDNAME) \
125 _(JSOP_DELNAME) \
126 _(JSOP_GETINTRINSIC) \
127 _(JSOP_DEFVAR) \
128 _(JSOP_DEFCONST) \
129 _(JSOP_SETCONST) \
130 _(JSOP_DEFFUN) \
131 _(JSOP_GETLOCAL) \
132 _(JSOP_SETLOCAL) \
133 _(JSOP_GETARG) \
134 _(JSOP_SETARG) \
135 _(JSOP_CALL) \
136 _(JSOP_FUNCALL) \
137 _(JSOP_FUNAPPLY) \
138 _(JSOP_NEW) \
139 _(JSOP_EVAL) \
140 _(JSOP_IMPLICITTHIS) \
141 _(JSOP_INSTANCEOF) \
142 _(JSOP_TYPEOF) \
143 _(JSOP_TYPEOFEXPR) \
144 _(JSOP_SETCALL) \
145 _(JSOP_THROW) \
146 _(JSOP_TRY) \
147 _(JSOP_FINALLY) \
148 _(JSOP_GOSUB) \
149 _(JSOP_RETSUB) \
150 _(JSOP_PUSHBLOCKSCOPE) \
151 _(JSOP_POPBLOCKSCOPE) \
152 _(JSOP_DEBUGLEAVEBLOCK) \
153 _(JSOP_EXCEPTION) \
154 _(JSOP_DEBUGGER) \
155 _(JSOP_ARGUMENTS) \
156 _(JSOP_RUNONCE) \
157 _(JSOP_REST) \
158 _(JSOP_TOID) \
159 _(JSOP_TABLESWITCH) \
160 _(JSOP_ITER) \
161 _(JSOP_MOREITER) \
162 _(JSOP_ITERNEXT) \
163 _(JSOP_ENDITER) \
164 _(JSOP_CALLEE) \
165 _(JSOP_SETRVAL) \
166 _(JSOP_RETRVAL) \
167 _(JSOP_RETURN)
169 class BaselineCompiler : public BaselineCompilerSpecific
170 {
171 FixedList<Label> labels_;
172 NonAssertingLabel return_;
173 #ifdef JSGC_GENERATIONAL
174 NonAssertingLabel postBarrierSlot_;
175 #endif
177 // Native code offset right before the scope chain is initialized.
178 CodeOffsetLabel prologueOffset_;
180 // Native code offset right before the frame is popped and the method
181 // returned from.
182 CodeOffsetLabel epilogueOffset_;
184 // Native code offset right after debug prologue and epilogue, or
185 // equivalent positions when debug mode is off.
186 CodeOffsetLabel postDebugPrologueOffset_;
188 // Whether any on stack arguments are modified.
189 bool modifiesArguments_;
191 Label *labelOf(jsbytecode *pc) {
192 return &labels_[script->pcToOffset(pc)];
193 }
195 // If a script has more |nslots| than this, then emit code to do an
196 // early stack check.
197 static const unsigned EARLY_STACK_CHECK_SLOT_COUNT = 128;
198 bool needsEarlyStackCheck() const {
199 return script->nslots() > EARLY_STACK_CHECK_SLOT_COUNT;
200 }
202 public:
203 BaselineCompiler(JSContext *cx, TempAllocator &alloc, JSScript *script);
204 bool init();
206 MethodStatus compile();
208 private:
209 MethodStatus emitBody();
211 bool emitPrologue();
212 bool emitEpilogue();
213 #ifdef JSGC_GENERATIONAL
214 bool emitOutOfLinePostBarrierSlot();
215 #endif
216 bool emitIC(ICStub *stub, ICEntry::Kind kind);
217 bool emitOpIC(ICStub *stub) {
218 return emitIC(stub, ICEntry::Kind_Op);
219 }
220 bool emitNonOpIC(ICStub *stub) {
221 return emitIC(stub, ICEntry::Kind_NonOp);
222 }
224 bool emitStackCheck(bool earlyCheck=false);
225 bool emitInterruptCheck();
226 bool emitUseCountIncrement(bool allowOsr=true);
227 bool emitArgumentTypeChecks();
228 bool emitDebugPrologue();
229 bool emitDebugTrap();
230 bool emitSPSPush();
231 void emitSPSPop();
233 bool initScopeChain();
235 void storeValue(const StackValue *source, const Address &dest,
236 const ValueOperand &scratch);
238 #define EMIT_OP(op) bool emit_##op();
239 OPCODE_LIST(EMIT_OP)
240 #undef EMIT_OP
242 // JSOP_NEG, JSOP_BITNOT
243 bool emitUnaryArith();
245 // JSOP_BITXOR, JSOP_LSH, JSOP_ADD etc.
246 bool emitBinaryArith();
248 // Handles JSOP_LT, JSOP_GT, and friends
249 bool emitCompare();
251 bool emitReturn();
253 bool emitToBoolean();
254 bool emitTest(bool branchIfTrue);
255 bool emitAndOr(bool branchIfTrue);
256 bool emitCall();
258 bool emitInitPropGetterSetter();
259 bool emitInitElemGetterSetter();
261 bool emitFormalArgAccess(uint32_t arg, bool get);
263 bool addPCMappingEntry(bool addIndexEntry);
265 void getScopeCoordinateObject(Register reg);
266 Address getScopeCoordinateAddressFromObject(Register objReg, Register reg);
267 Address getScopeCoordinateAddress(Register reg);
268 };
270 } // namespace jit
271 } // namespace js
273 #endif // JS_ION
275 #endif /* jit_BaselineCompiler_h */
